Add Travis badge

Plus some cosmetic style changes to README

README.md

@@ -1,15 +1,17 @@
+[![Build Status](https://api.travis-ci.org/Lendable/VisitorTrackingBundle.svg)](https://travis-ci.org/Lendable/VisitorTrackingBundle)
+
 Visitor Tracking Bundle
 =======================
 
-A Symfony2 bundle to track the requests.
+A Symfony bundle to track your requests.
 
 ## Upgrading from 0.x to 1.x
 
 The main difference is the move to multiple A/B testing seeds connected to a lifetime.
 You will probably want to run some kind of migration like:
 
-INSERT INTO seed SELECT NULL, id, 'default', seed FROM lifetime
+`INSERT INTO seed SELECT NULL, id, 'default', seed FROM lifetime`
 
-ALTER TABLE lifetime DROP seed
+`ALTER TABLE lifetime DROP seed`
 
-You can then get the old seed by doing $lifetime->getSeed('default')
+You can then get the old seed by doing `$lifetime->getSeed('default')`